Having joined the army on 21 October 1903, Languedoc was serving with a cavalry regiment when the war began. Promoted to Sous Lieutenant, he transferred to an infantry regiment on 21 March 1915 but was disqualified from further service when he was badly wounded in combat. On 10 January 1916, he joined the French Air Service and received his Pilot's Brevet on 31 March 1916. Posted to Escadrille N12, he scored his first victory flying a Nieuport 11 on 23 October 1916. The following year, Languedoc downed six more enemy aircraft and became N12's leading ace before he was mortally wounded on 16 July 1917.